Pipe-cutter.



W. H. JOHNSON.

'PIPE CUTTER;

APPLIOATION FILED MAR. 12, 1912.

1,064,655. 7 Patented June 10, 1. 13.

INVENTOR ATTORNEYS 20 ofthe cutting mechanism, and Fig. is an .UNI,TEDSTATES PATENT OFFICE.

? WILLIE HARRY 'JoHNs'oN, or Waco, TExAs Pisa-CUTTER.

Specification of letters Patent.

Patented June 10,1913.

Application-filed March 12, 1912. Serial No. 683,321.

T 0 all whom, it may concern:

' Be it'known that I, VVILLIE. HARRY JOHN-- son, a citizen of the UnitedStates, residing at Waco, in the county of McLenna n and State of Texas,have invented a new and useful" Improvement in Pipe-Cutters, of

which the following is a specification.

My invention is. an improvement in pipe cutters, and has for its object,the provision of a simple, easily operated device of the Characterspecified, by means of which a portion of the material of the pipe isremoved to form 'thecut, instead of the material being displaced andwedged apart without removing.

In the drawings, Figure 1 is a side view -of the improvement with thepipe in section. -I ig. 2 is a front view. Fig. 3 is an enlargedvertical section of the cutting mechanism. Fig.4 is a bottom plan viewenlarged sectional view of the holder.

' 3 The present embodiment of the invention comprises a frame, orsupport, composed of a'stand'a-rd 1 of general T-shape, provided fwith alateral 2 at its top, and the support has an are shaped extension 3 atits lower end. The arm 2 has a threaded bearing t at its outer end, andthe end of the extension 3 is forked at its "lower end, as

.shown at 5 and a disk cutter (Shaving a double cutting edge isjournaled bet-ween the arms of th'efork, on a pin 7 A cotter pin 8 ispassed through each end of-the pin T, for preventing longitudinalmovementthereof. i The cotter pins also prevent rotation of the pin. 1stem 10 is threaded through the bearing, the stem having a cross headllat its upper erld, forming a handle for turning the said stem. The

lower end 12 of the stem is conical; and the stem is provided with'anannular groove 13 above the conical portion. A collar 14 is held on therod, above the groove 13, by

means of a set screw 15, and the lowerend of the collar is notched orrecessed at 16.

A connecting member 18 is seated in the upper-end of a sleeve 29 to bedescribed, and thesaid member has a threaded stem 17 which engages therecess 22, in the upper end of the hglder 23 to bedescribed. The

'said connecting member has a socket in its upper end in which isreceived the lower end of the rod 10, and the upper end of the saidmember 18 is notched or recessed at 19 to correspond with and fit thenotches 16. A

screw 20 is threaded through the socket wall and is provided with areduced end 21 for engaging the groove 13. Theholder 23 isofapproximately cylindrical form, having its lower end transverselyslotted at 24, to receive the shank 25 of a'cut'ting blade 26.

A bolt 27 ispassed transversely of the holder at the slot. and throughan opening in the shank to hold the cutter 'in place, and

a nut 28 engages the bolt, to hold the parts together.

reduced at 34 to fit within the sleeve. The

reduced portion 34 is provided with-an annular groove 35, for receivingthe inner end of a screw 36, which is threaded-through the sleeve. Thelower end of sleeve 29 is also provided with oppositely arranged bearingplates 37 for holding journal pins 38 and 39. A roller or wheel 40 isjournaled on pin 38, between plates 37, and a pair of Wheels or rollersll. journaled on pin 39.

The rollers 41 are on opposite sides of the cutter 26, and the roller 40is in front of the same. The pipe 12 to be cut is'engaged by the saidrollers, the wheel 6 and the cutter 26. The pins 38 and 39 are held inplace,

'and also held from rotation, by cotter pins 43. It will be noted froman inspection of Figs. 1, 2 and 4;, that the bearings in the p Theholder 23 is slidable in a sleeve 29-, and the sleeve is provided wit-harms of the fork for the pins 7, and the beariugstor the/pins'38 and 39are grooved transversely on their outer faces to receive the cotter pins8 and 4-3 in order to prevent rotation. of the pins.

The blade 25-26 is adjustable vertically,

and is, held from forward or rearward move ment. by means of the pin 39,and a pin 46 arranged transversely of the bearing plates 37, between thepins 38 and 39. Each pin 39 and 46 is provided with a transverse grooveor notch 47, for receiving the edge of the blade, as shownin Figs. 3 and4. It will be noted from an inspection of Figs. 1 and 3, that the point48 of the cutting blade engages the pipe, at a point half-way betweenthe axes of the rollers and 4:1, and at :1V point diametrically oppositethe engagement of the disk cutter 6. The front edge of the blade isperpendicular to a tangent engaging the pipe at the point of contact oi.the said point 48.

In operation. the device is arranged as shown in Fig. l, and the cutterblade iii-2o is adjusted to the proper position; The collar It and aconnecting member 18 may be clutched together by the notches ofthesdparts. or released. by releasing set screw 13, and moving thecollar upward. The collar is slotted at H, and the slots are engaged 1)pins on the rod, asshown in Fig. 1. to permit the collar to be movedaway from the connecting member. \Vhen the collar is unclutched from theconnecting member, the. connecting member may be turned to move theholder 23. to adjust the cutter blade into engagement with the pipe. Thecollar is now clutched to thevconnecting member and held by set screw15. 'hcn so adjusted, the device as a whole is rotated-on the pipe,while the pipe is held in a vise or the like. As the device is turned onthe pipe in the direction of the arrow, the disk cutter 6 makes a doubleincision'around the pipe in advance of cutter 25 26, and the lowercorner of the cutter blade removesa thread of metal between theincisions. The rod 10 is turned at each rotation of the device totighten the cutters on the pipe, until the pipe is severed. \Vhen thepipe is cut. the device is removed. and if the new pipe is of thesamesizc as the old, no new adjustment is required. The thread of thestem 17 is a lefthand thread, that is in the opposite direction to thethread of disengaged fromthe recess of the holder.

\Vhcn rod 10 is turned to force the pipe toward cutter wheel 6 cutter25--2G is forced toward the pipe also. on account. of the above mannerof threading. 27 is provided with a shoulder at the inner end of thethread, against-which the nut 28 ams when tightened, so that the boltcannot be tightened on the sleeve 29. but is always free to move in theslot.30. The'rod 10 is provided with indentations for engagement by thescrew 15. to prevent slipping of the screw on the rod.

I claim:

1. A pipe cutter comprising a standard having at one end a lateral armprovided with a threaded bearing. and at. the other with an are shapedextension for partially encircling the pip! a disk cutter having adouble cutting edge journaled at the end of the extension. 1 sleeve mo.able 0!: the stand ard toward and from llit dbl cutter. rollers Thebolt! on the sleeve for engaging the pipe, a holder slidable in thesleeve and provided with a recess in its upper end internally threadedin the opposite direction to the bearing, and at the same pitch, aconnecting member seated in the upper end of the sleeve and providedwith a threaded stem engaging the re?- ccss. means for limiting themovement of the holder in the sleeve, :1 cutting blade secured in theholder, a rod threaded into the bearing of the lateral arm, a rotatableconnection between a connecting member and the rod. and releasable meansfor clutching 'a; connecting member to the rod.

2. A pipe cutter comprising a standard having at one end a lateral armprovided with a threaded bearing, and at the other with an are shapedextension for partially encircling the pipe, a diskcutter having a.double cutting edge journale'd at the end of the extensiom a sleevemovable on the standard toward and from the disk cutter, rollers on thesleeve for engaging the pipe, a holder slidable in the sleeve andprovided with a recess in, ils upper end internally threaded in theopposite direction to the bearing, and at the same pitch. a connectingmember seated in the upper end of the sleeve and pro vided with a tln-ea.led stem engaging the 1'ecess.ineans for limiting the movement, of theholder in the sleeve, a cutting blade secured in the holder, a rodthreaded into the bearing of the lateral arm, and a rotatable connectionbetween a'connecting member and the rod. i

3. A pipe cutter comprising a support; having an are shaped extensionfor partially encircling the pipe to be cut, a diskcutter provided witha double cutting edge journaled at the outer end of the extension, a

leeve mounted to slide on the support toward and from the cutter,rollers on the sleeve for engaging the pipe. a holder in the sleeve. acutter blade connected to the holder and arranged between the rollersand. cutting betw'ecn the incisions of the disk cutter. said holderhaving an internally threaded recess in its a per end, :1 connectingmember having a tireaded stem engaging the recess, a rod rotatablyconnected to a connecting member, said support having a bearing threadedin the opposite direction to the recess for engagement by the rod, andmeans for rigidly connecting the rod to a connecting member to constraina connecting member to rotate with the rod.

4. A pipe cutter comprising a support having an are shaped extension forpartially encircling the pipe to be cut, a disk cutter provided with adouble cutting edge iournalcd at the outer end of the extension, asleeve mounted to slide on the support toward and from the cutter.rollers on the sleeve for engaging the. pipe. a holder in the sleeve, acutter blade connectcd to the holder M t te mea est and arranged betweenthe rollers and cut ting between the ii'icisions of the disk cutter,said. holder having an internallythread ed recess in its upper end, aconnecting member having a threaded stein engaging the recess, a rodrotatably connected to a connecting member, the support having athreaded bearing for engagement by the rod, and means for securing therod to a connecting member.

5. A pipe cutter comprising a support having an are shaped extension forpartially encircling the pipe to be cut; a disk cutter provided with adouble cutting edge journaled at the outer end of the extension, asleeve mounted to slide on the-support toward and from the cutter,rollers on the sleeve for engaging the pipe, a holder in the sleeve, acutter blade connected to the holder and arranged between the rollersand out ting between theinci-sions of thedisk cutter, means forsimultaneously feeding the disk cutter and the holder toward the pipe,said means being rotatable with respect to the holder, and means forconnecting the holder to the feeding means to cause the holder to rotatewith the feeding means. I

6. A pipe cutter comprising a support having an are shaped extension forpartially encircling the pipe to be cut, a disk cutter provided with adouble cutting edge journaled at the outer end of the extension, asleeve mounted to'slide on the support toward and from the cutter,rollers on the sleeve for engaging the pipe, a holder in the sleeve, acutter blade connected to the holder and arranged between. the rollersand cutting between theincisions of the disk cutter, and means forsimultaneously feeding the disk cutter and the holder toward the pipe.

7. A pipe cutter comprising a support having an are shaped extension forpaiiially v encircling the pipe to be cut, a disk cutter provided with adoublecutting edge journaled at the outer end of the extension, a sleevemounted to-slide on the support toward and from the cutter, a holder inthe sleeve, a cutter blade connected to the holder and arranged to out.between the incisions of the-disk cutter, and means for simulta-fneously feeding the disk cutter and the holder toward the pipe.

8. A pipe cutter comprising a support having an' are shaped extensionfor partially encircling the bipe to be .cut, a disk cutter providedwith a'double cutting edge journaled at the outer end of the extension,a holder fo r a blade slidably mounted on the support, a cutter bladeconnected to the holder and cutting between the incisions of the diskcutter, and means for simutaneously feeding the' disk cutter and theholder.

9. A pipe cutter comprising a support adapted to partially encircle thepipe to be out, a disk cutter having a double cutting edge journaled onone end of the support, a blade holder mounted to slide on the sup orttoward and from the disk cutter, a bade connected to the holder. andarranged to out between the cuts of the disk cutter, and

cutter blade slidably connected to the sup port for movement toward andfrom the disk cutter, said blade being arranged to out between the cutsof the disk cutter, means for simultaneously feeding the blade and thedisk cutter,.said means being detachable from the blade to permit theadjustment-0f the blade, and means for 'connectingthe blade to thefeeding means to cause the holder to rotate with the feeding means.

11. A pipe cutter comprising a support adapted to partially encircle thepipe to be cut, a disk cutter having a double cutting edge journaled onone end of the support, a cutter blade slidably connected to the supportfor movement toward and from the disk cutter, said blade being arrangedto out between the cuts of the disk-cutter, and

means for simultaneously feeding th'eblade and the disk cutter.

12. A pipe cutter comprising a support adapted to partially encircle thepipe to be cut, a disk cutter having a double cutting edge journaled onone end of the support, a cutter blade slidably connected to the supportfor movement toward and from the disk cutter, said blade being arrangedto out between the cuts of the disk cutter and to engage the pipewataipoint diametrically -oppos'i'tetlie engagement of the disk cutter, andmeans for simultaneously feeding the blade and the disk cutter.

13. A pipe'cutter comprising a support adapted to partially encircle thepipe to be cut, a disk cutter having a double cutting edge journaled onone end of the support, a cutter blade slidably connected to the supportfor moi einent toward and from the disk cutter, said blade beingarranged to out between the cuts of the disk cutter, and at a pointdiametrically opposite the engagement of the disk cutter. means forsimultane ously feeding the blade and the disk cutter, a pin arrangedparallel tothe axis of the disk cutter on each side of the blade, aroller journaled on the pin in front of the blade for engaging the pipe.a pair of rollers journaled on the pin behind the blade, one-of saidrollers being on each side of the blade 7 and adapted to engage thepipe, said blade having its lower end beveled to form a cut ting pointat the front edge ofthe blade' said point being at equal distances from.pin I ehind the blade, one of said rollers being the front edgethereof.

edge journaled on one end of the support,

of the disk cutter, means for simultaneously the pin in front of theblade for engaging axes of the pins, and means for guiding the blade inits movement, said means comprising a groove in the pin behind thecutter for receiving the edge of the blade, a pin arranged transverselyof the support in front of the blade and having a notch for receiv- 14.A pipe cutter comprising a support adapted to partially encircle thepipe to be cut, a disk cutter having a double cutting a cutter bladeslidably connected to the'support for movementv toward and from the diskcutter, said blade being arranged to out between, the cuts of the diskcutter, and at a point diametrically opposite the engagement feedingtheblade and the disk cutter, a pin parallel to the axis of the disk cutteron each side of the blade, a roller journaled on the ipe, a pair ofrollers journaled on the mg on each side of the blade and adapted toengage the pipe, said blade having its lower end beveled'to form acutting point at the front edge of the blade, said point being at equaldistances from the axes of the pins.

15. A pipe cutter comprising a support for engaging the pipe to be out,a disk eutter having a double cutting edge journaled on the support forengaging the pipe, a cutter blade slidable on the support toward andfrom the disk cutter and arranged to engage the opposite side of thepipe from the disk cutter and tocut between the cuts of the disk cutter,means for snnultaneously feeding the blade on the disk cutter, saidblade being,

adjustable with respect to the feeding means, a pin on the support oneach side of the blade, each pin having a transverse groove forreceiving the edge of'the l lade.

16.; .In a pipe cutter a support for engag- I ing the p1pe,-a blade onthe support, means disk.

WILLIE HARRY JOHNSON. Witnesses:

G. L. WILEY, O. L. SIMS.

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